Wheat-heater



' (No Model.)

D. W. MARMON.

WHEAT EEATEE.

,139. 5 Patented Apr.25,1882.

R. O M E V m .IIIIIIIIIIV lunmlllllllllll Illu WITNESSES.

i UNrrrtJ STATES PATENT Ormes.

DANIEL IV. MARMON, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO THE ,NORDYKE St MARMON COMPANY, OF INDIANA.

WH EAT-HEATER.

SPECIFICATION forming part of Letters Patent No. 257,139, dated April 25, 1882.

Application filed February 7, 1882.

To all whom it may concern:

Beit known that I, DANIEL IV. MARMON, of the city of Indiana-polis, countyof Mai-iemand State of Indiana, have invented certain new and useful Improvements in Wheat-Heaters, of which. the following is a specification.

My said invention consists of an improvementin that form of devices known as wheatheaters, whereby a more efficientdeviee is produced for the purpose ot' imparting to grain (especially wheat) the necessary degree of warmth before grinding, for purposes which are readily understood by those skilled in the operating of grist-mills.

My said improvement consists of the combination, with an outer case and coils of pipe, of

cone-like devices, whereby the grain is caused to pass through the heater with an irregular or pulsating movement, which causes alarger proportion of said grain to come in contact with the heated coils than where the iiow is regular and uninterrupted, as will hereinafter be more specifically set forth.

Referring to the accompanying drawings, which are made a part hereof, and onwhich similar letters of reference .indicate similar parts, Figure 1 is a vertical section of my improved heater on the dotted line x m,- Fig. 2, :t horizontal section on the dotted line y y,- Fig. 3, a perspective view of one ofthe conical devices and the means et' attaching it to the coiled pipe, and Fig. 4 an under side plan of the same.

In said drawings, the portions marked A represent the outside easing of my improved heater; B, an inner casing; O, a hopper attached to the lower end of the casing A; D, the coiled pipe; E, the conical devices which are attached to the pipe-coils; F, erossbars which serve as fastening devices for said conical devices, and G the bolts by which the parts E and F are connected.

The easingAB and hopper O are constructed ofa common form and need no special description.

The pipe D may bein either single or double coils, (single coils are shown,) and is connected.

to other pipes leading thereto and therefrom by the cocks DDZ, respectively. Steam or hot air, on being introduced into these pipes, hea ts them and through them whatever surrounds or comes in contact with them.

(No model.)

.The devices E are cone-shaped, and are set with their conical faces up on the coils of pipe, (prefera blyon every third coil, as shown.) Each is provided with lugs (usually three) e e2 e3, which rest upon the pipe and support said device. These lugs are made of varying heights, as shown, so thatthecone will rest iuhorizontal position, notwithstanding the inclination ofthe coils, and thus distribute the wheat evenly on all sides thereof as it passes through the heater. Each of said devices is also provided with lugs c4 on its under side, which hold the cross-bar F in place. rIhe form of these devices may, however, be varied to a considerable extent without departing from my invention, so long as they produce an irregular or pulsating ow of grain through the hea-ter.

The cross-bar F and bolt G simply act as clamp parts to clamp the cone E securely upon the pipe D, and will be readily understood from the drawings.

The operation of my said invention is as fellows: The heater is secured in some convenient place, (preferably against the ceiling of the grinding-room of the mill.) The wheat is introduced at the top and passes down inside the casing, around and between the coils of pipe and the conical devces, to the hopper, from which it runs by an ordinary spout or conveyer to the inillstones. The conical devices preventtoo rapid a passage of the grain, and at the same time firstcause it to iow out against the casing, and then permit it to return t0 the center of the device, inside the pipes, whereby an irregular pulsating flow is produced, causing the grain to mix thoroughly and the different portions to frequcu t-ly change positions,thus bringing it all at different times during its passage near to or in contact with the heatingpipes, and thus heating itall evenly and thoroughly to whatever temperature is desired. v t.

Having thus fully described my said invention, what. I claim as new, and desire to secure by Letters Patent., is-

1. The. combination, in a wheatheater, of the casing, the coiled heating-pipes, and conical devices secured to the latter, substantially as set forth.

2. The combination, in a wheatheater,with the casing and heating-pipes, (said pipes being disposed to occupy a considerable portion ot' the spaceinside said casing,) of devices secured at intervals along'the pipes, transversely across the course of the grain, whereby a pulsating Vor irregular iow of the grain is secured, thereby mixing said grain thoroughly and heating` it evenly, substantially us described, and for the purposes specified.

3. lhe combination, in a wheat-heater, with the coiled pipes thereof, of the device E, provided With the bearing wings of varying heights, whereby the said device is caused to rest in horizontal position, notwithstandingthe incline of the coils of pipe, substantially asset forth.

4. The combinatiqu, in a wheat heater, of 15 the casing, the coiled pipe, the device E, the cross-bar, and the connectingbolt, substantially as set forth.

In witness whereof I have hereunto set my hand andy seal, at Indianapolis, Indiana, this 2o 4th day of February, A. D. 15882.

DANIEL W. MARMON. [L. s.]

-In presence of- O. BRADFORD, CHAs. L. THURBER. 

